| 摘要 |
PURPOSE:To improve an object recognition rate by transmitting/receiving ultrasonic waves plural times, finding out the average value of data for plural transmission/reception and processing the average value by a data processing means. CONSTITUTION:This ultrasonic object recognizing device is constituted of an oscillation circuit 11, an ultrasonic sensor 12, an amplifier 13, an A/D conversion means 14, a memory 15, a data averaging means 19, a data processing means 16, an address forming device 17, and a control part. The circuit 11 forms a burst signal, the sensor 12 is driven by a burst signal outputted from the circuit 11 and the transmission/reception of ultrasonic waves and the reception of the ultrasonic waves reflected by an object are executed plural times. A receiving signal from the sensor 12 is A/D converted by an A/D converting means 14 and the means 19 finds out the average value of plural output data from the means 14. The means 16 executes the arithmetic processing of the average value and recognizes the object by ultrasonic holography method. Thus the object recognition rate can be improved. |
